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Is it believed that two carbon-12 nuclei (mass 12.0000 amu) can react in the core of a supergiant star to form sodium-23 (mass 22.989767 amu) and hydrogen-1 (mass 1.007825). Calculate the energy in kJ released from this reaction for each mole of hydrogen formed.
A. 2.16 x 1014
B. 2.16 x 1011
C. 2.16 x 108
D. 2.16 x 105
E. 2.16 x 1012
Suppose that 1.331 g of impure barium hydroxide is dissolved in enough water to produce 250. mL of solution and that 35.0 mL of this solution is titrated to the stoichiometric point with 17.6 mL of 0.0935 M HCl(aq). What percentage of the impure s..
The initial temperature of the calorimeter is 20.7oC. If 6g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter?
a sample of H2O with a mass of 46.0 grams has a temperture of 100 c. how many joules energy are necessary to boil the water
What is the volume of the water displaced? (State the correct number of significant digits.) What is the uncertainty in this value?
When 157mg of dipentylamine was added to 122mg of benzoic acid and 2mL of water, a completely homogenous solution was formed. Draw the sturctures of the species present in the water.
A 0.300-M solution of X (Mm = 171 g/mol) has a density of 1.096 g/ml. What is the molality of X in the solution?
How many grams of malonic acid would be needed to make 50.0 milliliters (0.0500 L) of 0.200 M malonic acid?
It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). A 46.06 gram sample of a hydrate of MnSO4
Identify the oxidizing agent and reducing agent in the reaction. give breif rational for how this answer is arrived
What pressure will the evolved carbon dioxide produce when 184.5g of calcium carbonate decomposes in a 20.00L container at 22.4 deg celsius?
If the total mass of the mixture is 452.2 g, what masses of CaCl2 and water should be used?
Calculate the energy of an electron in the hydrogen atom when n = 2 and calculate the energy of an electron in the hydrogen atom when n = 6.
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